Friction-top can.



PATENTED OCT. 23

W. J. CHAMBERS.

FRICTION TOP CAN.

APPLIOATIONIILED 30122, I905.

,L ru/mr. ilda J Cfiambera' W.

U NITED STATES rATnNT' OFFICE.

W ILLIAM J CHAMBERS, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN CAN COMPANY, or Jnss Y.

NEW YORK, N. Y., A CORPORATION OF NEW FRICTION-TOP CAN.

Specification of Letters Patent.

Patented Oct. 23, 19 06.

Application filed October 2, 1905. Serial N0. 280,925.

To all whom it may concern.-

Be it known that I, WVILLIAM J. CHAMBERS, a citizen of the United States, residing in Ohicago, in the county of Cook and State of Illi- 5 1101s, have invented a new and useful Improvement in Friction-Top Cans, of which the following is a s ecification.

My invention re ates to that class of canclosures generally known as friction-top 1 cans, and in which the annular wall or flange of the can top is frictionally engaged by a corre-' spondingly formcd wall or flange of the cancover to afford an effective joint or closure and which permits of the forcible removal of r the cover without damage to the engaging parts, so that the closure may be repeated as required. 3 1

hfy invention has for its object a simple and efficient structural formation of the can 1 top and cover whereby the above results or fun ctions are attained in a ready and economical manner and whereby the strength, security, and liquid tightness of the closure is mechanically improved and perfected and the I: 5 cover locked in place without interfering with itscapability for ready removal and repeated closure of the can, all of whichwill hereinafter more fully appear and be more particularly pointed out in the claims.

In the accompanying drawings, forming a part of this specification, Figurerl is a can tral section of a friction-top can to which my present improvement is applied; Fig. 2 is a plan view; Fig. 3, a plan with the cover re- 3 5 moved, and Fig. 4 a bottom view of the cover.

In the drawings, 1 is the can-body, and 2 the orificed can-top, having the usual couns tersink 3 or annularly-concaved form," as

- shown, so as to afford a raised. outermargin l,

which acts as a fulcrum in prying off the cover.

5 is an annular friction-seat wall integral with the can-top and forming the border of the opening. or orifice 6 of such top.

substantially a semicircle, with its extreme inner ed e projecting downwardly.

8 is t e can-cover, comprising the usual marginal folded. rim 9, adapted for engagement in the operation of prying the cover off displace the cover.

In the present construction such wall projects upf. 5 wardly from the can-top and is provided tension, an

the can. The main central web 9 or disk of the coveris integrally connected to thefolded rim aforesaid by an annular ,u )wardlyextendedarch 10, the crowned walls 11 and 12 of which constitute .frictionseats for respective engagement with the frictiomseat wall 5 and the resilient flange or margin 7'01 such wall, as shown.

In my present improvement the abovedescribcd construction is combined with the the can and also servin to somewhat con-" tract the resilient curved flange 7 of the cantop as the cover is forced home on the can and to maintain said resilient curved flange 7 of the can-to under a degree of tension, as the seat therefor in the cover is normally some what smaller than the exterior thereof when the cover is in place. swell, or look 13 on the cover at the same time prevents the s ring or resilient action of the curved flange fforn tending to loosen or As-the cross-sectional interior of the annular arch of my friction-cover is slightly smaller than the cl oss-sectional exteriorof The annular bulge,

the correspondingly shaped resilient curved r braced by the arch of the cover the resilient curved flan e is held and maintained under this adds greatly to the ti htness and perfection 0' the closure. ne

'ing annular arch 10, the wedging mouth serving to facilitate the application of the cover to the can-top, It is within the scope of the present invention to form said locking curved flange of the top surrounded and em- I cover has a rounded shoulder 14 at the juncnnnulanhul or swell 13 in the Walls 12 of the cover Eiiring the manufacture of the snrnelbefore the cenis filled or the cover one pliedor to forrn'th-e some by suitable expandmg epphances after the cover 13 in place upon the can-top.

I claim 1. Inn frictiorntop can, the combination of an annular top provided. with an integrally upwardly pro ecting friction-seat wnll tei'rninntin in on inn-'ardly and clown'wurdlv turned resilient flange, and a. fiicttin-cover having an annular upwzirdly-exlending arch, the Outer and inner curved. walls c when constitute friction-seats eng-rging the hi0- tion-seat Well and resilient flange ol' the mm.- top, the innermost of said zilch Walls on tie cover having an annular locking bulge o1 swell projecting under and engaging the free edge of said inwardly and downwardly turned resilient flange of the can-top, said friction-cover having an annular rim projeeting horizontally from the lower edge of the outer wall of said upwardly-extending arch to strengthen and stil'len said out or wall substantially as specified.

2. In a lr1ct1on-top can. the combnnition with an annular top of a. fi'ictiowcmxer, said top and cover being provided with intercugsiging annular irictionseot walls, the friction-s'eat Wall on the top terminating in a resilient inwardly and downwardly curved flange, and the friction-sent wall on the cover having an annular locking bulge or swell engaging said resilient curved flange on the cantop to lock the cover in place, said frictioneover having an annular rim projectinghori zontally froin'thelower edge of the outer wall of said upWardly-fextendi 11g arch to strengtl Zjl end stiffen said outer wall substantially as specified.

3. In a irietion-top can, an annular countersunk top having a marginal raised rim for rying off the cover, and an upwoylly-proecting friction-seat wall tern'iinating in on inwardly-curved resilient finngo, and a. triction-eover having a marginal folded rim for 'prying the some off, and provided with an annular upwnrdly-projecting raised arch, the inner and outer walls of which constituting friction-sent wells en zwin' the friction-seat a a E:

4 well and resilient flange of the can-top, said inner wall of the arch having an annular look;- ing bulge or swell rejecting under and en- 15 gaging said inward f and downwardly proe of the outer wall esenel jecting resilient flange of the can-top, said marginal folded rim of the cover pro ecting horizontally from the lower edge of said outer nnl'iular "wall of said up\vnrdlyprojecting arch of said cover to still'cn and strengthen the some substantially as specified.

l. in a friction-top can, the combination of an orilieed. top having an integral u )r wordlyqn'ojecting annular lllCtlOlFSC-itl: wall, the u pper end of which is formed into on inturned and downturncd llnngc, snidwull :unl ilni'igc forming :1 resilient border for the cnn- Orifice, and n fruition-cover having an integrally-fornrcd central web and an nnnulnr upwnrdly-extcnding arch, the crowned w: lls ol Mich. constitute lrii-lion-scnls l'cr engagement wit! the h'icl,ion-l--1c:1t wall and. llnngc ol the min-lop, the innermost ol' said arch walls having :2 annular bulge or swell near its point cl connection with the central web of the win-cover on ge ting under and engaging suid downnnrdly and in\\nrdl turned llungc of the min-top, said fr clLin-cover hnviug an annular rim projeeiing uorizonl'olly from the ol' said upunrdlyextending arch to strengthen and sl'iil'en said m ller wall substantially {is specified.

iii--11. fruition-top can, the combination of an ori 'lieed top having an. integral u wnrdly-projeciing :umulzn' friction-sent wall, the upper end of which lormod into an inturued and downturued flange, said. well ond flange forming a. resilient border for the canorifice, and a. friction-cover having it main web and a folded marginal rim integrally connected. together by an annular upwardly extending arch the crowned wnllsol which constitute Friction-seats for engagement with 1 the friction-sent wall and flange of the conton. the innermost of said arch. walls having an annular bulge or swell near its point of connection with the nnrin web of the caneover projecting under and. engaging said downwardly and inwardly turned flange of the earntop, said marginal folded rim oi the cover projecting horizontally from the lower edge of said outer annular wall of said upwnrdly-projecting arch of said cover to stiffen and strengthen the some substantially specified.

WILLIAM. J. (1H AMBERS.

Witnesses:

H. M. MUNDAY, WILLIAM. A. Gnronn. 

